package homework;

public class test10_2 {
    public static void main(String[] args) {
        //一共五行
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= i; j++) {
                System.out.print("@");
            }
            System.out.println();//每行换行
        }
    }
}
